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Changelog

Source: NEWS.md

ReliaGrowR 0.6

CRAN release: 2026-04-16

New Features

  • New nhpp() function for fitting parametric Non-Homogeneous Poisson Process (NHPP) models (Power Law and Log-Linear) to recurrent event data from repairable systems, including piecewise/segmented support with automatic change point detection.
  • New mcf() function for non-parametric Mean Cumulative Function estimation using the Nelson-Aalen estimator.
  • New exposure() function for computing system exposure (total operating time at risk) across repairable systems.
  • New overlay_rga() and overlay_nhpp() functions for overlaying multiple model fits on a single plot.
  • New hex sticker logo for the package.

Minor improvements and bug fixes

  • Updated and expanded test suite for NHPP, MCF, and exposure models.
  • New vignette on Repairable Systems Analysis (RSA).
  • Updated README with new features and logo.
  • Other minor improvements and bug fixes.

ReliaGrowR 0.4.0

New Features

  • New sim_failures() function for simulating failures with optional simulation window parameter.
  • MLE fit method for rga() function for maximum likelihood estimation.
  • Enhanced predict_rga() function for making predictions from RGA models.
  • Added confidence intervals for Duane model.
  • Enhanced rdt() function with f parameter for failure-allowed reliability demonstration test plans.

Minor improvements and bug fixes

  • Fixed legend in rga_predict plot.
  • Added WeibullR to package suggests.
  • New comprehensive RGF (Reliability Growth Function) vignette with detailed documentation.
  • Updated and improved test suite throughout.
  • Enhanced package documentation and examples.
  • Updated citation information.
  • Code styling improvements.
  • Other minor improvements and bug fixes.

ReliaGrowR 0.3

CRAN release: 2025-11-07

Minor improvements and bug Fixes

  • More plotting options for RGA and Duane models.
  • More printing options for RGA and Duane models.
  • New vignette on reliability data management.
  • More documentation and examples.
  • Other minor improvements and bug fixes.

ReliaGrowR 0.2

CRAN release: 2025-09-21

Breaking Changes

  • duane_plot function has been renamed to duane function with a separate S3 method for plotting.
  • plot_rga function has been replaced with a separate S3 method for plotting RGA objects.

New Features

  • New goodness of fit plotting functions for RGA models called ppplot.rga and qqplot.rga. for P-P plots and Q-Q plots respectively.
  • New rdt function for generating reliability demonstration test plans.

Minor improvements and bug fixes

  • More plotting options for RGA and Duane models.
  • More documentation and examples.
  • Other minor improvements and bug fixes.

ReliaGrowR 0.1.5

CRAN release: 2025-07-13

Minor Updates and Bug Fixes

  • Minor improvements, documentation updates, and bug fixes.

ReliaGrowR 0.1.4

CRAN release: 2025-05-16

New features

  • New custom print methods for RGA and Duane models.
  • More plot options for RGA and Duane models.

Minor Updates and Bug Fixes

  • Other minor improvements, documentation updates, and bug fixes.

ReliaGrowR 0.1.3

CRAN release: 2024-11-16

Minor Updates and Bug Fixes

  • Model results now include more details for model parameters including standard error, confidence bounds, etc.
  • Other minor improvements.

ReliaGrowR 0.1.2

Minor Updates and Bug Fixes

  • Duane model not includes optional plot argument.
  • Other minor improvements.

ReliaGrowR 0.1.1

CRAN release: 2024-11-01

Minor Updates and Bug Fixes

  • RGA and Duane model results now include goodness of fit metrics (AIC and BIC).
  • Duane model results now include fitted values.
  • Other minor improvements

ReliaGrowR 0.1.0

CRAN release: 2024-09-19

  • Initial release.